Results 61 to 70 of about 10,536 (250)

Warm inflation with non-comoving scalar field and radiation fluid

European Physical Journal C: Particles and Fields, 2021
We consider a warm inflationary scenario in which the two major fluid components of the early Universe, the scalar field and the radiation fluid, evolve with distinct four-velocities.
Tiberiu Harko, Haidar Sheikhahmadi
doaj   +1 more source

Warm Inflation with the Standard Model

Physical Review Letters
We show for the first time that warm inflation is feasible with standard model (SM) gauge interactions alone. Our model consists of a minimal extension of the SM by a single scalar inflaton field with an axionlike coupling to gluons and a monomial potential. The effects of light fermions, which were previously argued to render warm
Kim V. Berghaus, Marco Drewes, Sebastian Zell   +2 more
openaire   +4 more sources

Rainfall Shapes the Diversity of Soil Nitrogen‐Fixing Microorganisms Worldwide

Advanced Science, EarlyView.
This study reveals the distinctive pattern and mechanism of rainfall driving the global biodiversity and biogeography of soil potential N‐fixing microorganisms, and constructs the theoretical framework. The results guide us on how to maintain ecosystem productivity under future climate changes (e.g., whether a specific region needs more N fertilizers ...
Bin Hua, Shuang Pang, Ang Li, Zonghao Hu, Honghui Wu, Shuhan Zhang, Yi Fan, Yi Wu, Wei Yang, Yachao Zhao, Yupeng Guan, Baoming Ji, Deliang Kong, Yong Zhao, Anton A. Goncharov, Anastasia Yu. Korotkevich, Rong Mao, Yang Zhang, Ximei Zhang   +18 more
wiley   +1 more source

Non-minimal coupled warm inflation with quantum-corrected self-interacting inflaton potential

European Physical Journal C: Particles and Fields, 2022
In this work, we investigate the non-minimally coupled scenario in the context of warm inflation with quantum-corrected self-interacting potential. We transform the potential in the Jordan frame to the Einstein frame and consider a dissipation parameter ...
Daris Samart, Patinya Ma-adlerd, Peeravit Koad, Phongpichit Channuie   +3 more
doaj   +1 more source

Trans-Planckian effects in warm inflation [PDF]

Journal of Cosmology and Astroparticle Physics, 2019
We study the effect of a non-trivial vacuum prescription on warm inflation observables, namely the power spectrum of the comoving curvature perturbation. Non-trivial choice of vacuum, can provide information about trans-Planckian physics. Traditionally, the initial condition for inflation is chosen to be the usual Bunch-Davies vacuum.
Nezhad, H. Bouzari, Shojai, F.
openaire   +2 more sources

A Biofabricated Human Acinus‐on‐a‐Chip Unveils Mechanotransductive Drivers of Ventilator‐Induced Lung Injury via Decoupling Volutrauma and Barotrauma

Advanced Science, EarlyView.
This bioinspired acinus‐on‐a‐chip recapitulates VILI pathology, revealing that volutrauma drives P53/NF‐κB pathways while barotrauma triggers mitochondrial‐Wnt dysregulation. A fibrotic transitional cell cluster was identified. Pharmacological interventions targeting these pathways significantly ameliorated injury, establishing a mechanobiological ...
Heng Lu, Liansheng Liu, Zengyong Hu, Shuxian Fang, Ruohan Ren, Sidi Liu, Meng Zhao, Zhiting Luo, Ziyue Zhang, Wenlong Shao, Qian Liu   +10 more
wiley   +1 more source

Warm multi-natural inflation

Journal of Cosmology and Astroparticle Physics
Abstract Multi-natural inflation is studied in the context of warm inflation. We study the warm multi-natural inflation scenario with both linear and cubic temperature-dependent dissipation coefficients. The model is motivated by axion-like inflation models with coupling to non-Abelian gauge fields through a dimension-five ...
Asuka Ito, Rudnei O. Ramos
openaire   +2 more sources

Constrained Forest Methane Sink by Thermal Adaptation of Soil Methanotrophs

Advanced Science, EarlyView.
Climate warming can stimulate methanotroph‐mediated CH4 oxidation in forest soils, thereby mitigating the increase in atmospheric CH4 concentrations. By integrating evidence from a macro‐climatic thermal gradient and a 70‐day incubation experiment, this study demonstrates that microbial methanotrophs can adapt to long‐term temperature changes at the ...
Baizhi Jiang, Xi Zhang, Zhenghu Zhou, Nianpeng He, Xuhui Zhou, Hongyang Chen   +5 more
wiley   +1 more source

Constraining chameleon field driven warm inflation with Planck 2018 data

European Physical Journal C: Particles and Fields, 2019
We investigate warm inflationary scenario in which the accelerated expansion of the early Universe is driven by chameleon-like scalar fields. Due to the non-minimal coupling between the scalar field and the matter sector, the energy-momentum tensor of ...
Haidar Sheikhahmadi, Abolhassan Mohammadi, Ali Aghamohammadi, Tiberiu Harko, Ramón Herrera, Christian Corda, Amare Abebe, Khaled Saaidi   +7 more
doaj   +1 more source

Adiabatic out-of-equilibrium solutions to the Boltzmann equation in warm inflation

Journal of High Energy Physics, 2018
We show that, in warm inflation, the nearly constant Hubble rate and temperature lead to an adiabatic evolution of the number density of particles interacting with the thermal bath, even if thermal equilibrium cannot be maintained.
Mar Bastero-Gil, Arjun Berera, Rudnei O. Ramos, João G. Rosa   +3 more
doaj   +1 more source